A controllable electrolytic aluminum tank heat dissipation window waste heat recovery device

Abstract

The invention belongs to the technical field of heat recycling and energy conservation and relates to a controllable waste heat recycling device for a cooling window of an electrolytic aluminum bath. The controllable waste heat recycling device comprises a circulating water pump adjustment control wire, a supplementary water pressure pump, an ejector, a circulating water pump, a master liquid supply pipe, liquid distribution branch pipes, a first branch flow adjusting valve, first heat extraction units, second heat extraction units, nth heat extraction units, two-phase flow branch pipes, a circulating water pipe, a pressure pump adjustment control wire, a liquid distributor, a second branch flow adjusting valve, a master two-phase flow pipe, a gas-liquid separator, a liquid level meter, a water level signal line, a central controller, a safety valve, a steam temperature and pressure signal line, a heat extraction unit temperature signal line, a gas supply pipe, an mth branch flow adjusting valve, heat extraction branches, water inlet pipes, water outlet pipes, other heat extraction units and a lower steel plate. By means of the controllable waste heat recycling device, waste heat of the cooling window is utilized reasonably, the work environment of a workshop is improved, temperature distribution in the electrolytic aluminum bath is effectively controlled, the production cost is reduced, the overall structural design is simple, principles are scientific, and the application environment is friendly.

Description

Technical field: [0001] The invention belongs to the technical field of heat recovery and energy saving, and relates to a method of rationally recycling the waste heat of the heat dissipation window of an electrolytic aluminum tank, providing users with saturated steam at a certain pressure, and effectively controlling the heat dissipation of each window to ensure that the electrolytic aluminum tank A controllable waste heat recovery system with uniform and stable temperature inside. Background technique: [0002] Electrolytic aluminum is to obtain aluminum through electrolysis. The modern electrolytic aluminum industry adopts the cryolite-alumina molten salt electrolysis method. This method uses molten cryolite as a solvent, alumina as a solute, carbon body as an anode, and aluminum liquid as a cathode. At 950°C-970°C, the electrochemical reaction is carried out on the two electrodes in the electrolytic cell. [0003] The electrolytic aluminum production process requires ...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art, and to design a controllable electrolytic aluminum tank heat dissipation window waste heat recovery device to solve the problem that the wall surface of the electrolytic aluminum tank has a high temperature and is not conducive to the electrolytic reaction. The problem of large external heat dissipation and harsh working environment in the production workshop overcomes the defect of energy waste, solves the problem of uncontrollable temperature in the electrolytic aluminum tank, solves the problems of complex system, inconvenient maintenance, and high production cost

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